87671515 has 16 divisors (see below), whose sum is σ = 110419200. Its totient is φ = 66697312.

The previous prime is 87671477. The next prime is 87671531. The reversal of 87671515 is 51517678.

It is a cyclic number.

It is not a de Polignac number, because 87671515 - 2¹⁷ = 87540443 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18456 + ... + 22714.

It is an arithmetic number, because the mean of its divisors is an integer number (6901200).

Almost surely, 2^87671515 is an apocalyptic number.

87671515 is a deficient number, since it is larger than the sum of its proper divisors (22747685).

87671515 is a wasteful number, since it uses less digits than its factorization.

87671515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4466.

The product of its digits is 58800, while the sum is 40.

The square root of 87671515 is about 9363.3068410685. The cubic root of 87671515 is about 444.2418855551.

The spelling of 87671515 in words is "eighty-seven million, six hundred seventy-one thousand, five hundred fifteen".